Guy Boothby,
A Bid for Fortune; Or, Dr. Nikola's Vendetta
“ One fact had repeatedly struck me as significant, and that was the circumstance that every morning between six and half-past, as already narrated, the same cripple went down the street; and in connexion with this, within the last few days of the time, a curious coincidence had revealed itself to me. From the tapping of his crutches on the stones I discovered that while one was shod with iron, the other was not. Now where and when had I noticed that peculiarity in a cripple before? ”
